104 BPM
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4/4 ×2
Drag rhythmic values into up to 8 beat blocks per line to build a drum groove, or click a tile then click a block to place it — handy on a trackpad.
Math skill: Angle Measurement (4.MD.C.5-6)
How the beat teaches it: Every slot gives an angle in degrees — since the degree count itself is too big to build directly, build how many TENS of degrees it is.
This is lesson 21 of 24 in RockBlocks Math, Grade 4, a free course where every lesson turns a math idea into something you can count, hear, and play. The previous lesson, “Area and Perimeter Word Problems,” covered area and Perimeter Word Problems (4.MD.A.3). Next is Lesson 22, “Classifying Two-Dimensional Shapes.”
Every slot above (A, B, C, D) is its own question, and it’s a real, blank RockBlocks beat the whole time — the same drag-and-drop tiles, kit, tempo, sheet music, and drummer view as anywhere else on the site. Tap ❓ Questionin the corner to read the current slot’s problem, build your answer right in the grid, then tap ✓ Check Answerto grade it. Once you’re done, keep going: expand the beat, drop it into a Stack, or save a copy to your own page — nothing here overwrites the lesson itself, so every visitor still starts from the same blank slots.